Read up to chapter 16. Wanted to give it a shot because of its good reviews but the writing quality, grammar, and the whole ~chu ending dialogue by the main character's system deterred me from reading further.
However, I did appreciate the fact that the main character (Lexi) of this novel wasn't reborn to the past but just given a second chance after her suicide attempt, which is unique as she still has to face and deal with her past mistakes instead of returning to a clean slate like many other reborn novels. Essentially, the premise is interesting but the execution is lacking.
Additionally, I couldn't sympathize wholly with the protagonist. It isn't simply because she is a "vicious" characterโthere are plenty of antihero/villainous protagonists that I sympathize with even if I don't agree morally with their actions. There just wasn't much depth or background motivation added to her character to make me sympathize with her, especially since all her actions seem to point at her getting her just desserts even if she did fall in love with a douchebag who didn't appreciate her (doesn't justify her actions though). There's potential for interest in her redemption, but there isn't enough interest so far to continue reading.
I would definitely suggest the author add more details/descriptions and inner thoughts of the main character earlier on in the novel as there's no real attachment to the character at this point. Of course, take my opinion with a grain of salt as this is based only after 16 chapters.